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MPL 20x3x2 / N38 - lamellar magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

lamellar magnet

Catalog no 020130

GTIN/EAN: 5906301811367

5.00

length

20 mm [±0,1 mm]

Width

3 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

0.9 g

Magnetization Direction

↑ axial

Load capacity

2.33 kg / 22.90 N

Magnetic Induction

370.68 mT / 3707 Gs

Coating

[NiCuNi] Nickel

product parameters »

0.394 ZŁ with VAT / pcs + price for transport

0.320 ZŁ net + 23% VAT / pcs

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Product card - MPL 20x3x2 / N38 - lamellar magnet

Specification / characteristics - MPL 20x3x2 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020130
GTIN/EAN	5906301811367
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
length	20 mm [±0,1 mm]
Width	3 mm [±0,1 mm]
Height	2 mm [±0,1 mm]
Weight	0.9 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.33 kg / 22.90 N
Magnetic Induction ~ ?	370.68 mT / 3707 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x3x2 / N38 - lamellar magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Engineering analysis of the magnet - data

These values constitute the outcome of a mathematical analysis. Values rely on algorithms for the class Nd₂Fe₁₄B. Operational performance may differ. Use these data as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - power drop
MPL 20x3x2 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3700 Gs 370.0 mT	2.33 kg / 5.14 lbs 2330.0 g / 22.9 N	warning
1 mm	2103 Gs 210.3 mT	0.75 kg / 1.66 lbs 752.3 g / 7.4 N	weak grip
2 mm	1172 Gs 117.2 mT	0.23 kg / 0.52 lbs 233.7 g / 2.3 N	weak grip
3 mm	721 Gs 72.1 mT	0.09 kg / 0.20 lbs 88.5 g / 0.9 N	weak grip
5 mm	345 Gs 34.5 mT	0.02 kg / 0.04 lbs 20.3 g / 0.2 N	weak grip
10 mm	101 Gs 10.1 mT	0.00 kg / 0.00 lbs 1.7 g / 0.0 N	weak grip
15 mm	42 Gs 4.2 mT	0.00 kg / 0.00 lbs 0.3 g / 0.0 N	weak grip
20 mm	21 Gs 2.1 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	weak grip
30 mm	7 Gs 0.7 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip
50 mm	2 Gs 0.2 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip

Pulling power drops drastically with every subsequent millimeter of spacing. Keep in mind that even a microscopic distance (e.g., contamination, paint, veneer) strongly weakens the grip. Neodymiums work optimally in perfect adhesion; air break weakens the power. See how rapidly the load capacity drop, when the product does not adhere tightly to the metal substrate. When calculating the assembly, discard redundant distances.

Table 2: Sliding force (wall)
MPL 20x3x2 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.47 kg / 1.03 lbs 466.0 g / 4.6 N
1 mm	Stal (~0.2)	0.15 kg / 0.33 lbs 150.0 g / 1.5 N
2 mm	Stal (~0.2)	0.05 kg / 0.10 lbs 46.0 g / 0.5 N
3 mm	Stal (~0.2)	0.02 kg / 0.04 lbs 18.0 g / 0.2 N
5 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The following data shows the theoretical shear load necessary to start the downward movement of the magnet vertically against a vertical steel plate (considering standard friction). This value is a function of the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 20x3x2 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.70 kg / 1.54 lbs 699.0 g / 6.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.47 kg / 1.03 lbs 466.0 g / 4.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.23 kg / 0.51 lbs 233.0 g / 2.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.17 kg / 2.57 lbs 1165.0 g / 11.4 N

When placing a magnet on a upright plane (e.g., a board), it you can count on barely approx. 1/5 of its nominal power. Gravitational force as well as a low friction coefficient influence the fact that products slip faster than they detach. Planning a hanger? Remember that the shear force is much weaker than the perpendicular breakaway force. On a painted metal, the magnet will give way down under a much lighter weight. Application of an anti-slip coating can significantly raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MPL 20x3x2 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.23 kg / 0.51 lbs 233.0 g / 2.3 N
1 mm	25%	0.58 kg / 1.28 lbs 582.5 g / 5.7 N
2 mm	50%	1.17 kg / 2.57 lbs 1165.0 g / 11.4 N
3 mm	75%	1.75 kg / 3.85 lbs 1747.5 g / 17.1 N
5 mm	100%	2.33 kg / 5.14 lbs 2330.0 g / 22.9 N
10 mm	100%	2.33 kg / 5.14 lbs 2330.0 g / 22.9 N
11 mm	100%	2.33 kg / 5.14 lbs 2330.0 g / 22.9 N
12 mm	100%	2.33 kg / 5.14 lbs 2330.0 g / 22.9 N

A too thin steel is unable to focus the entire magnetic field, which squanders power of the holder. Should you attach a powerful product to a thin surface, the field will pass right through and the holding will be smaller. To squeeze the maximum of this neodymium's potential, you need a suitably thick backing of steel. The saturation effect means that on delicate walls (e.g., thin profiles), the holder works worse. We advise picking the steel dimension from these parameters.

Table 5: Thermal resistance (stability) - power drop
MPL 20x3x2 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.33 kg / 5.14 lbs 2330.0 g / 22.9 N	OK
40 °C	-2.2%	2.28 kg / 5.02 lbs 2278.7 g / 22.4 N	OK
60 °C	-4.4%	2.23 kg / 4.91 lbs 2227.5 g / 21.9 N
80 °C	-6.6%	2.18 kg / 4.80 lbs 2176.2 g / 21.3 N
100 °C	-28.8%	1.66 kg / 3.66 lbs 1659.0 g / 16.3 N

Ordinary NdFeB products change their properties power past the thermal threshold. Avoid high temperatures – heat can permanently demagnetize this product. As the temperature rises, the neodymium's capacity temporarily lowers. Do not use this magnet near heat sources exceeding its safe range. Ignoring the limit will result in permanent loss of magnetic properties.

*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) risk losing magnetic properties sooner compared to rod magnets. The danger warning in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 20x3x2 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	5.06 kg / 11.17 lbs 4 866 Gs	0.76 kg / 1.67 lbs 760 g / 7.5 N	N/A
1 mm	3.01 kg / 6.64 lbs 5 705 Gs	0.45 kg / 1.00 lbs 452 g / 4.4 N	2.71 kg / 5.97 lbs ~0 Gs
2 mm	1.64 kg / 3.61 lbs 4 205 Gs	0.25 kg / 0.54 lbs 245 g / 2.4 N	1.47 kg / 3.24 lbs ~0 Gs
3 mm	0.89 kg / 1.97 lbs 3 106 Gs	0.13 kg / 0.29 lbs 134 g / 1.3 N	0.80 kg / 1.77 lbs ~0 Gs
5 mm	0.31 kg / 0.67 lbs 1 816 Gs	0.05 kg / 0.10 lbs 46 g / 0.4 N	0.27 kg / 0.61 lbs ~0 Gs
10 mm	0.04 kg / 0.10 lbs 690 Gs	0.01 kg / 0.01 lbs 7 g / 0.1 N	0.04 kg / 0.09 lbs ~0 Gs
20 mm	0.00 kg / 0.01 lbs 202 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
50 mm	0.00 kg / 0.00 lbs 24 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.00 lbs 14 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
70 mm	0.00 kg / 0.00 lbs 9 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
80 mm	0.00 kg / 0.00 lbs 6 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.00 kg / 0.00 lbs 5 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.00 lbs 3 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two strong neodymiums attract each other from a much further distance than a magnet and steel combination. The connection of two magnets generates a stronger field and a larger range of performance. Designing a strong closure? Apply two magnets instead of one magnet and a striker plate. Remember that when bringing together two magnets, the collision energy is extreme. The repulsion force is slightly lower than the attraction, but still significant.
*Flux density between like poles drops to ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
* Results refer to sliding force of a pair of matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - warnings
MPL 20x3x2 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.5 cm
Hearing aid	10 Gs (1.0 mT)	3.0 cm
Timepiece	20 Gs (2.0 mT)	2.5 cm
Mobile device	40 Gs (4.0 mT)	2.0 cm
Remote	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

A strong magnetic field poses a serious hazard to electronics and medical implants. These neodymiums produce a field that disrupts operation of sensitive medical devices. Remember: the unseen radiation penetrates the body and plastic. Increased vigilance must be taken by people with cochlear implants and insulin pumps. The risk also applies to: mechanical watches, car keys, membranes, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - warning
MPL 20x3x2 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	51.34 km/h (14.26 m/s)	0.09 J
30 mm	88.88 km/h (24.69 m/s)	0.27 J
50 mm	114.74 km/h (31.87 m/s)	0.46 J
100 mm	162.27 km/h (45.08 m/s)	0.91 J

Neodymium magnets are delicate – a strong collision with metal can result in shattering. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Striking energy can destroy the magnet or dangerous crushing to fingers. Be sure to control the product during installation so it doesn't slam with momentum against the metal. A collision at high speed ends with a crack of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MPL 20x3x2 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The following table defines the conditions under which this product can be safely used. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
MPL 20x3x2 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	1 748 Mx	17.5 µWb
P_c Coefficient	0.32	Low (Flat)

Total magnetic flux passing through the pole surface. Essential parameter when building generators as well as sensors. P_c value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MPL 20x3x2 / N38

Environment	Effective steel pull	Effect
Air (land)	2.33 kg	Standard
Water (riverbed)	2.67 kg (+0.34 kg buoyancy gain)	+14.5%

Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

*Warning: On a vertical surface, the magnet holds only a fraction of its max power.

2. Steel saturation

*Thin steel (e.g. computer case) drastically limits the holding force.

3. Thermal stability

*For N38 grade, the safety limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.32

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Engineering data and GPSR

Elemental analysis

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Sustainability

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 020130-2026

Quick Unit Converter

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This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 20x3x2 mm and a weight of 0.9 g, guarantees premium class connection. This magnetic block with a force of 22.90 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.

The key to success is shifting the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. Watch your fingers! Magnets with a force of 2.33 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 20x3x2 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as invisible mounts under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 20x3x2 / N38, we recommend utilizing two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 20x3x2 / N38 model is magnetized through the thickness (dimension 2 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (20x3 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

This model is characterized by dimensions 20x3x2 mm, which, at a weight of 0.9 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 2.33 kg (force ~22.90 N), which, with such a compact shape, proves the high grade of the material. The product meets the standards for N38 grade magnets.

Pros and cons of neodymium magnets.

Benefits

Apart from their consistent power, neodymium magnets have these key benefits:

They retain magnetic properties for around 10 years – the drop is just ~1% (based on simulations),
Magnets effectively defend themselves against demagnetization caused by ambient magnetic noise,
A magnet with a shiny nickel surface has better aesthetics,
The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures approaching 230°C and above...
Possibility of individual machining and adjusting to complex needs,
Fundamental importance in advanced technology sectors – they serve a role in data components, electric motors, precision medical tools, also industrial machines.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in compact constructions

Disadvantages

Disadvantages of neodymium magnets:

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
Due to limitations in creating nuts and complex forms in magnets, we propose using a housing - magnetic mount.
Possible danger related to microscopic parts of magnets are risky, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these devices can be problematic in diagnostics medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum magnetic pulling force – what contributes to it?

The declared magnet strength concerns the peak performance, obtained under ideal test conditions, namely:

with the application of a sheet made of special test steel, guaranteeing full magnetic saturation
with a thickness minimum 10 mm
with an ideally smooth contact surface
without any clearance between the magnet and steel
under vertical force direction (90-degree angle)
in temp. approx. 20°C

Lifting capacity in practice – influencing factors

In practice, the actual lifting capacity results from many variables, listed from crucial:

Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Chemical composition of the base – mild steel gives the best results. Alloy admixtures reduce magnetic permeability and lifting capacity.
Smoothness – full contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
Thermal factor – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Warnings

Safe distance

Do not bring magnets near a purse, laptop, or TV. The magnetic field can destroy these devices and erase data from cards.

Dust explosion hazard

Machining of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Maximum temperature

Control the heat. Heating the magnet to high heat will ruin its properties and pulling force.

Danger to pacemakers

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.

Sensitization to coating

A percentage of the population experience a sensitization to Ni, which is the typical protective layer for neodymium magnets. Frequent touching can result in a rash. It is best to use protective gloves.

Phone sensors

Navigation devices and smartphones are extremely susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Crushing force

Danger of trauma: The attraction force is so immense that it can result in blood blisters, crushing, and broken bones. Use thick gloves.

Do not give to children

Always keep magnets away from children. Risk of swallowing is high, and the effects of magnets clamping inside the body are fatal.

Do not underestimate power

Handle magnets consciously. Their huge power can shock even experienced users. Stay alert and do not underestimate their force.

Magnets are brittle

Despite metallic appearance, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.

Attention! Looking for details? Read our article: Why are neodymium magnets dangerous?

MPL 20x3x2 / N38 - lamellar magnet

Product card - MPL 20x3x2 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - data

Table 1: Static force (pull vs distance) - power drop MPL 20x3x2 / N38

Table 2: Sliding force (wall) MPL 20x3x2 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MPL 20x3x2 / N38

Table 4: Material efficiency (substrate influence) - power losses MPL 20x3x2 / N38

Table 5: Thermal resistance (stability) - power drop MPL 20x3x2 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MPL 20x3x2 / N38

Table 7: Protective zones (electronics) - warnings MPL 20x3x2 / N38

Table 8: Dynamics (kinetic energy) - warning MPL 20x3x2 / N38

Table 9: Anti-corrosion coating durability MPL 20x3x2 / N38

Table 10: Electrical data (Pc) MPL 20x3x2 / N38

Table 11: Underwater work (magnet fishing) MPL 20x3x2 / N38

1. Wall mount (shear)

2. Steel saturation

3. Thermal stability

4. Demagnetization curve and operating point (B-H)

Elemental analysis

Sustainability

Force (pull)

Field Strength

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Pros and cons of neodymium magnets.

Benefits

Disadvantages

Lifting parameters

Maximum magnetic pulling force – what contributes to it?

Lifting capacity in practice – influencing factors

Warnings

Safe distance

Dust explosion hazard

Maximum temperature

Danger to pacemakers

Sensitization to coating

Phone sensors

Crushing force

Do not give to children

Do not underestimate power

Magnets are brittle

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - power drop
MPL 20x3x2 / N38

Table 2: Sliding force (wall)
MPL 20x3x2 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 20x3x2 / N38

Table 4: Material efficiency (substrate influence) - power losses
MPL 20x3x2 / N38

Table 5: Thermal resistance (stability) - power drop
MPL 20x3x2 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 20x3x2 / N38

Table 7: Protective zones (electronics) - warnings
MPL 20x3x2 / N38

Table 8: Dynamics (kinetic energy) - warning
MPL 20x3x2 / N38

Table 9: Anti-corrosion coating durability
MPL 20x3x2 / N38

Table 10: Electrical data (P_c)
MPL 20x3x2 / N38

Table 11: Underwater work (magnet fishing)
MPL 20x3x2 / N38